Modeling and coordinating building systems in three dimensions: a case study

2006 ◽  
Vol 33 (12) ◽  
pp. 1490-1504 ◽  
Author(s):  
A Reza Tabesh ◽  
Sheryl Staub-French
Keyword(s):  
Three Dimensional ◽  
Three Dimensions ◽  
Knowledge Domain ◽  
Building Systems ◽  
Coordination Process ◽  
Building System ◽  
Product And Process ◽  
The Impact ◽  
Design And Construction

This paper presents a case study that investigated a building system coordination process used three-dimensional (3-D) models during design and construction of a complex research facility. We modeled and coordinated a variety of building systems in three dimensions, including architectural, structural, mechanical, electrical, and plumbing systems. We documented the 3-D modeling and coordination process, evaluated existing software tools support of this process, documented the resources required to execute this process, and assessed the impact of the 3-D models on the coordination process. We also identified the design and construction knowledge used to create a coordinated and constructible design. We classified this knowledge in a framework instantiated by examples and concepts found in this study. The framework associates the design and construction constraints that govern the modeling and coordination process with the knowledge domain, the domain context, and the specific modeling and coordination task. The main contributions of the paper are the evaluation of the 3-D coordination process and the identification and classification of building system coordination knowledge.Key words: 3-D modeling, mechanical, electrical, and plumbing (MEP) coordination, building systems, knowledge framework, product and process modeling, constructability.

ANALYSIS AND DESIGN OF G+4 RESIDENTIAL BUILDING USING ETABS

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Chinmay Padole ◽  
Samiksha Bansod ◽  
Taniya Sukhdeve ◽  
Abhishek Dhomne ◽  
Maheshwari Nagose ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Residential Building ◽  
Shape Modelling ◽  
Analysis And Design ◽  
Design Procedures ◽  
High Rise ◽  
Building Systems ◽  
Dynamic Loadings ◽  
Storey Building

ETABS stands for Extended Three-Dimensional Analysis of Building Systems. ETABS is commonly used to analyze: Skyscrapers, concrete structures, low and high rise buildings, and portal frame structures. The case study in this paper mainly emphasizes on structural behavior of multi-storey building for different plan configurations like rectangular, C, L and I-shape. Modelling of 15-storeys R.C.C. framed building is done on the ETABS software for analysis ETABS issue, for analysis and design for building systems. ETABS features are contain powerful graphical interface coupled with unmatched modeling, analytical, and design procedures, all integrated using a common database. STAAD and ETABS both of the software are well equipped and very much capable of handling different shape of the structures, static and dynamic loadings and different material properties.

scholarly journals Exploring the Human Capital Development Dimensions of Chinese Investments in Africa: Opportunities, Implications and Directions for Further Research

2018 ◽  
Vol 54 (2) ◽  
pp. 189-210 ◽  
Author(s):  
Motolani Agbebi
Keyword(s):  
Human Capital ◽  
Three Dimensions ◽  
Human Capital Development ◽  
Study Approach ◽  
Working Hypothesis ◽  
Research Areas ◽  
Economic Engagement ◽  
Capital Development ◽  
The Impact

This article uses a case-study approach to discuss the effects of Chinese economic engagement on three dimensions of human capital development: local employment, training and skill building, and knowledge and technology transfer. The study findings suggests that Chinese economic engagement can and does contribute to human capital development in Africa; however, this is dependent on certain sectoral factors and contextual conditions. This study advances a working hypothesis that the human capital development impact of Chinese economic engagement will vary across countries and sectors of the African economy. This working hypothesis seeks to guide further research towards developing a theoretical framework for the study of Chinese economic engagement in Africa and its effects on human capital development. The article also identifies research areas that should be further explored in order to gain a deeper understanding of the impact of Chinese economic engagement in Africa.

The impact of the primary canine premature extraction on the sagittal, vertical and transversal dimensions of the bone tissue

2021 ◽  
Vol 21 (1) ◽  
pp. 47-50
Author(s):  
Ad. A. Mamedov ◽  
T. V. Timoshenko ◽  
T. S. Gutnikova
Keyword(s):  
Bone Loss ◽  
Three Dimensional ◽  
Volume Measurement ◽  
Growth Spurt ◽  
Special Technique ◽  
Suggested Technique ◽  
Present Case Study ◽  
The Impact ◽  
Primary Canine

Relevance. The article studies the primary canine premature extraction as the cause of three-dimensional (sagittal, transversal, vertical) bone underdevelopment in the area of the extracted tooth. The research is relevant as there are insufficient data in the scientific literature on this topic and the prevalence of premature primary canine extraction for therapeutic and orthodontic indications is high.Materials and methods. The present case study developed a special technique for bone volume measurement in all planes by CBCT.Results. Several CBCTs of one patient over the period of three years were analyzed according to the suggested technique. The calculations demonstrated significant sagittal and vertical bone loss.Conclusions. The results of the research allowed us to conclude that premature extraction of the primary canines leads to the significant sagittal and vertical bone loss. Besides, no increase in the intercanine distance was detected despite the patient’s growth spurt.

Conflicts in adaptation: case studies from Nepal and the Maldives

2019 ◽  
Vol 28 (3) ◽  
pp. 304-318 ◽  
Author(s):  
Phu Doma Lama ◽  
Per Becker
Keyword(s):  
Climate Change ◽  
Participant Observation ◽  
Qualitative Interviews ◽  
Case Study Research ◽  
Three Dimensional ◽  
Disaster Risk ◽  
Three Dimensions ◽  
Critical Examination ◽  
Content Type

Purpose Adaptation appears to be regarded as a panacea in policy circles to reduce the risk of impending crises resulting from contemporary changes, including but not restricted to climate change. Such conceptions can be problematic, generally assuming adaptation as an entirely positive and non-conflictual process. The purpose of this paper is to challenge such uncritical views, drawing attention to the conflictual nature of adaptation, and propose a theoretical framework facilitating the identification and analysis of conflicts in adaptation. Design/methodology/approach The study is based on case study research using first-hand narratives of adaptation in Nepal and the Maldives collected using qualitative interviews, participant observation and document analysis. Findings The findings identify conflicts between actors in, and around, communities that are adapting to changes. These conflicts can be categorized along three dimensions: qualitative differences in the type of conflict, the relative position of conflicting actors and the degree of manifestation of the conflict. Originality/value The three-dimensional Adaptation Conflict Framework facilitate analysis of conflicts in adaptation, allowing for a critical examination of subjectivities inherent in the adaptation discourses embedded in disaster risk reduction and climate change adaptation research and policy. Such an inquiry is crucial for interventions supporting community adaptation to reduce disaster risk.

scholarly journals A systematic study of proto-neutron star convection in three-dimensional core-collapse supernova simulations

2020 ◽  
Vol 492 (4) ◽  
pp. 5764-5779 ◽  
Author(s):  
Hiroki Nagakura ◽  
Adam Burrows ◽  
David Radice ◽  
David Vartanyan
Keyword(s):  
Neutron Star ◽  
Systematic Study ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Core Collapse ◽  
Core Collapse Supernova ◽  
Tau Neutrinos ◽  
The Impact ◽  
Proto Neutron Star

ABSTRACT This paper presents the first systematic study of proto-neutron star (PNS) convection in three dimensions (3D) based on our latest numerical fornax models of core-collapse supernova (CCSN). We confirm that PNS convection commonly occurs, and then quantify the basic physical characteristics of the convection. By virtue of the large number of long-term models, the diversity of PNS convective behaviour emerges. We find that the vigour of PNS convection is not correlated with CCSN dynamics at large radii, but rather with the mass of PNS − heavier masses are associated with stronger PNS convection. We find that PNS convection boosts the luminosities of νμ, ντ, $\bar{\nu }_{\mu }$, and $\bar{\nu }_{\tau }$ neutrinos, while the impact on other species is complex due to a competition of factors. Finally, we assess the consequent impact on CCSN dynamics and the potential for PNS convection to generate pulsar magnetic fields.

scholarly journals Introducing Sustainability in a Robotic Engineering Degree: A Case Study

2020 ◽  
Vol 12 (14) ◽  
pp. 5574 ◽  
Author(s):  
Francisco A. Pujol ◽  
David Tomás
Keyword(s):  
Climate Change ◽  
Sustainable Development ◽  
Environmentally Friendly ◽  
Female Students ◽  
Three Dimensions ◽  
Male Students ◽  
Economic Aspects ◽  
Engineering Degree ◽  
The Impact

This paper describes a group activity concerning the topic of climate change, designed to introduce the concepts of sustainable development into a Robotic Engineering degree. The purpose of this activity was to make students reflect about the impact of their work on the planet as future engineers by asking them to design an environmentally friendly robot that also integrated social and economic aspects, covering the three dimensions of sustainability in this way. Students were surveyed in order to study different aspects of their commitment, attitudes, practices, and motivation towards sustainability. In addition to the overall analysis of the survey, three specific studies were carried out with the aim of comparing the responses of different population groups: (i) Students who completed the proposed assignment and students who did not, (ii) female and male students, and (iii) roles played in the assignment. The results of the analysis revealed the high commitment of the students with respect to sustainability, but also a lack of active participation and awareness of their impact as future engineers. The activity was not only a way to introduce sustainability concepts, but in many cases, it also became a motivation for the participants, especially for the female students.

Algorithmic path planning of static robots in three dimensions using configuration space metrics

Robotica ◽  
2010 ◽  
Vol 29 (2) ◽  
pp. 295-315 ◽  
Author(s):  
Debanik Roy
Keyword(s):  
Path Planning ◽  
Configuration Space ◽  
Heuristic Algorithm ◽  
Degrees Of Freedom ◽  
Three Dimensional ◽  
Industrial Applications ◽  
Three Dimensions ◽  
Task Space ◽  
Articulated Robot

SUMMARYCollision-free path planning for static robots is a demanding manifold of contemporary robotics research, vastly due to the growing industrial applications. In this paper, a novel ‘visibility map’-based heuristic algorithm is used to generate near-optimal safe path for a three-dimensional congested robot workspace. The final path is obtainable in terms of joint configurations, by considering the Configuration Space of the task space. The developed algorithm has been verified initially by considering representative 2D workspaces, cluttered with different obstacles with regular geometries and then after with the spatial endeavour. A case study reveals the effectiveness of the developed modules of the configuration space mapping, pertaining to a five degrees-of-freedom low payload articulated robot.

Three-dimensional effects in low-strain integrity testing of piles: analytical solution

2016 ◽  
Vol 53 (2) ◽  
pp. 225-235 ◽  
Author(s):  
Changjie Zheng ◽  
George P. Kouretzis ◽  
Xuanming Ding ◽  
Hanlong Liu ◽  
Harry G. Poulos
Keyword(s):  
Impact Load ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Integrity Testing ◽  
Integrity Tests ◽  
The One ◽  
Propagation Of Waves ◽  
The Impact ◽  
Pile Integrity ◽  
Elastic Soil

The interpretation of low-strain integrity tests of piles is commonly based on methods developed around the one-dimensional wave propagation theory. In reality, waves resulting from the impact of a hammer on a pile head propagate in three dimensions, and the validity of the plane-front assumption is rather questionable for cases where the size of the hammer is small relative to that of the pile. This paper presents an analytical model of the dynamic response of a pile to an impact load on its head, considering propagation of waves in both vertical and radial directions. The proposed formulation applies to a pile of finite length embedded in multilayered elastic soil, and allows for considering both shape and material pile defects, by reducing locally the radius of the pile cross section or the Young’s modulus of its material. Arithmetic examples are used to depict the effect of high-frequency interferences on the interpretation of pile integrity tests, which can only be accounted for in the three-dimensional formulation of the problem, and lead to practical suggestions for the interpretation of such tests.

Can the Deforestation Breeze Change the Rainfall in Amazonia? A Case Study for the BR-163 Highway Region

2010 ◽  
Vol 14 (18) ◽  
pp. 1-25 ◽  
Author(s):  
Sandra I. Saad ◽  
Humberto R. da Rocha ◽  
Maria A. F. Silva Dias ◽  
Rafael Rosolem
Keyword(s):  
Boundary Layer ◽  
Large Scale ◽  
Three Dimensional ◽  
Atmospheric Modeling ◽  
Thermal Cell ◽  
Soil Wetness ◽  
Soil Dryness ◽  
Regional Atmospheric Modeling ◽  
The Impact

Abstract The authors simulated the effects of Amazonian mesoscale deforestation in the boundary layer and in rainfall with the Brazilian Regional Atmospheric Modeling System (BRAMS) model. They found that both the area and shape (with respect to wind incidence) of deforestation and the soil moisture status contributed to the state of the atmosphere during the time scale of several weeks, with distinguishable patterns of temperature, humidity, and rainfall. Deforestation resulted in the development of a three-dimensional thermal cell, the so-called deforestation breeze, slightly shifted downwind to large-scale circulation. The boundary layer was warmer and drier above 1000-m height and was slightly wetter up to 2000-m height. Soil wetness affected the circulation energetics proportionally to the soil dryness (for soil wetness below ∼0.6). The shape of the deforestation controlled the impact on rainfall. The horizontal strips lined up with the prevailing wind showed a dominant increase in rainfall, significant up to about 60 000 km2. On the other hand, in the patches aligned in the opposite direction (north–south), there was both increase and decrease in precipitation in two distinct regions, as a result of clearly separated upward and downward branches, which caused the precipitation to increase for patches up to 15 000 km2. The authors’ estimates for the size of deforestation impacting the rainfall contributed to fill up the low spatial resolution in other previous studies.

Modeling of LSF Technology in Building Design and Construction Case-Study: Parand Residential Complex, Iran

2011 ◽  
Vol 341-342 ◽  
pp. 447-451 ◽  
Author(s):  
Mohammadjavad Mahdavinejad ◽  
Mina Hajian ◽  
Amene Doroodgar
Keyword(s):  
Mass Production ◽  
Building Design ◽  
Industrial Building ◽  
Combined Model ◽  
Advantages And Disadvantages ◽  
Steel Framing ◽  
Building Systems ◽  
Optimized Model ◽  
Design And Construction

The adopted strategy to overcome the housing shortage crisis in Iran is the mass production. The way forward to accelerate the mass production, is adopting the industrial building systems with the increased prefabrication. One of the most optimal new building systems is Lightweight Steel Framing (LSF) Technology. Parand Residential Complex as the first serious project to industrialize the construction processes in Iran is facing the various problems during the processes of manufacture and execution of LSF components. The research aim is to offer an optimized model for manufacturing and execution processes of LSF Technology in the constructive projects which in it the deficiencies are compensated and strengths are intensified. So, case-studies and combined strategies has adopted as research method and based on it, the manufacture and execution processes of LSF technology in the case-study, were taken into consideration to recognize the existing advantages and disadvantages. The results of the research show that disadvantages of the manufacture and execution processes can be improved into one combined model. Finally, with offering four strategies to compensate the deficiencies and three strategies to intensify the strengths, the paper develops a model to coordinate the processes of manufacturing and execution in LSF technology in building design and construction.

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